20747713936

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{408677}}^1$

素因数の和:408871

約数の個数: 40

約数和(自身を含む): 42567900480

約数和(自身を除く): 21820186544

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 167, 304, 334, 668, 1336, 2672, 3173, 6346, 12692, 25384, 50768, 408677, 817354, 1634708, 3269416, 6538832, 7764863, 15529726, 31059452, 62118904, 68249059, 124237808, 136498118, 272996236, 545992472, 1091984944, 1296732121, 2593464242, 5186928484, 10373856968, 20747713936]

約数ペア:

[(1, 20747713936), (2, 10373856968), (4, 5186928484), (8, 2593464242), (16, 1296732121), (19, 1091984944), (38, 545992472), (76, 272996236), (152, 136498118), (167, 124237808), (304, 68249059), (334, 62118904), (668, 31059452), (1336, 15529726), (2672, 7764863), (3173, 6538832), (6346, 3269416), (12692, 1634708), (25384, 817354), (50768, 408677)]